When to plant cabbage in Bismarck
Cabbage is cold-hardy, so every date keys off Bismarck's frost dates of May 15.
Step 1 · Sow
Start seeds indoors
Apr 3 – Apr 24
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Apr 24 – May 15
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Jul 3 – Aug 2
Picking runs until conditions turn against the crop.
Window
Days to maturity
70 – 100 d
Bismarck's 132-day season leaves this much room.
Cabbage on Bismarck's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
FROST
FROST
MAY 15
SEP 25
Common questions
When will cabbage be ready to harvest in Bismarck?
Expect to harvest from around early July (Jul 3–Aug 2) in Bismarck, based on its local frost dates. Confidence 80%.
When should I start cabbage seeds indoors in Bismarck?
Start seeds indoors around early April (Apr 3–Apr 24) in Bismarck, based on its local frost dates. Confidence 85%.
When can I transplant cabbage outdoors in Bismarck?
Transplant outdoors around late April (Apr 24–May 15) in Bismarck, based on its local frost dates. Confidence 89%.
How long is the growing season in Bismarck?
Bismarck has roughly 132 frost-free days, which is enough time to grow cabbage to maturity outdoors.
The rule of thumb
Sow cabbage as soon as the soil is workable — it tolerates cool weather and light frost. Every date on this page is derived from that rule and Bismarck's frost dates.
Confidence 89/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.